This is a discussion on tranny flush and rear diff fluid change within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; I read the whole tranny fluid info thread, and since my tranny grinds sometimes when i try to get into ...

tranny flush and rear diff fluid change

I read the whole tranny fluid info thread, and since my tranny grinds sometimes when i try to get into 1st or reverse, Im going to try 06wrx4me's mix'
However, i want to flush it too. I'll change the gear oil, drive for about 50 miles, then swap it out with the mix. What gear oil should i use for the flush? does it matter much?

also, I want to change the fluid in the rear diff. is there a link anywhere that can help me with that process?

I read the whole tranny fluid info thread, and since my tranny grinds sometimes when i try to get into 1st or reverse, Im going to try 06wrx4me's mix'
However, i want to flush it too. I'll change the gear oil, drive for about 50 miles, then swap it out with the mix. What gear oil should i use for the flush? does it matter much?

also, I want to change the fluid in the rear diff. is there a link anywhere that can help me with that process?

Don't bother flushing it. Just do the fluid change and your good to go from there. Watch the dipstick level carefully. I have never gotton more than 3 qts in the tranny before it came up to the Full mark. I guess there's always 0.7 left over somewhere in the tranny.

Do the search on the rear diff (here or NASIOC). It's real easy. There's two plugs that both take a 1/2" socket wrench (the wrench with no socket, just the square part). Takes 0.8 qts of whatever 75w90 (or 75w85) gear oil you want to use. The rear diff is a closed design, so it is not picky like the tranny.

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